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Table 1 Estimated annual article and journal counts in full immediate open access journals

From: Anatomy of open access publishing: a study of longitudinal development and internal structure

  Year 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
Online-only OA journals (APC) Articles 795 2332 4,936 6,247 7,532 12,143 17,256 25,949 40,689 54,296 90,932 136,264
  Journals 53 120 167 189 256 344 425 630 950 1,239 1,494 1,824
Online-only OA journals (no APC) Articles 5,445 10,690 13,844 17,238 20,106 26,626 33,067 38,991 46,362 62,521 81,421 93,513
  Journals 334 484 613 804 1,006 1,272 1,538 1,793 2,048 2,399 2,548 2,495
Subscription-based print journals with OA content online Articles 14,461 23,095 27,234 39,814 51,614 66,494 75,486 86,691 100,393 108,793 116,003 110,353
  Journals 357 550 630 847 1,106 1,375 1,539 1,819 2,011 2,149 2,170 2,395
All OA journals Articles 20,702 36,117 46,013 63,299 79,253 105,262 125,809 151,630 187,444 225,610 288,357 340,130
  Journals 744 1,154 1,410 1,841 2,368 2,991 3,502 4,243 5,010 5,788 6,213 6,713
  1. APC: article-processing charge; OA: open access.